Virtual Image Display System and Calibration Method for Pointing Direction of Controller Thereof

2. The calibration method for the pointing direction according to claim 1, wherein the relative angle information comprises a first included angle with a second axis of the spherical coordinate system and a third included angle with the second axis of the spherical coordinate system, and the second axis and a third axis of the spherical coordinate system are different.

4. The virtual image display system according to claim 3, wherein the relative angle information comprises a first included angle with a second axis of the spherical coordinate system and a second included angle with a third axis of the spherical coordinate system, and the second axis and the third second axis of the spherical coordinate system are different.